Methods for replacing a cardiac valve
First Claim
1. A method for replacing a native cardiac valve having at least two native valve leaflets, said method comprising:
- providing a prosthetic valve that includes an expandable support member having oppositely disposed first and second ends and a main body portion extending between the first and the second ends, and having a biocompatible material covering an entire circumference of an inside surface thereof, a plurality of upper wing members that extend integrally from the first end of the support member and are spaced about the circumference of the main body portion, and a plurality of lower wing members that extend integrally from the second end of the support member, wherein the expandable support member further comprises at least two strut members spaced apart from each other and physically attached to the prosthetic valve along at least two commissural sections;
temporarily holding the upper wing members and the lower wing members in a radially collapsed configuration during surgery;
expanding the expandable support member to physically engage a circumferential region of the support member with an annulus of the native cardiac valve to exert sufficient force to pin the native leaflets against the annulus of the cardiac valve;
releasing a plurality of constraining wires to allow the upper and the lower wing members to expand radially outward to an expanded configuration, wherein the upper wing members are transverse to the direction of blood flow; and
securing the prosthetic valve in the annulus of the native cardiac valve such that the upper wing members expand to physically contact a first section of cardiac tissue spaced away from the native leaflets and surrounding the annulus of the native cardiac valve.
1 Assignment
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Accused Products
Abstract
A method for replacing a cardiac valve includes an expandable support member having oppositely disposed first and second ends, a main body portion extending between the ends, and a prosthetic valve within the main body portion. The main body portion has an annular shape for expanding into position in the annulus of the valve. The first and second ends include a plurality of upper and lower wing members movable from a collapsed condition into an extended condition for respectively engaging a first section of cardiac tissue surrounding the valve and for: engaging a portion of the native valve leaflets to pin the leaflets back against the annulus. The second end further includes at least two strut members spaced apart from each other. A respective one of the strut members is attached to at least one commissural section of the prosthetic valve to prevent prolapse of the valve leaflets.
6 Citations
12 Claims
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1. A method for replacing a native cardiac valve having at least two native valve leaflets, said method comprising:
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providing a prosthetic valve that includes an expandable support member having oppositely disposed first and second ends and a main body portion extending between the first and the second ends, and having a biocompatible material covering an entire circumference of an inside surface thereof, a plurality of upper wing members that extend integrally from the first end of the support member and are spaced about the circumference of the main body portion, and a plurality of lower wing members that extend integrally from the second end of the support member, wherein the expandable support member further comprises at least two strut members spaced apart from each other and physically attached to the prosthetic valve along at least two commissural sections; temporarily holding the upper wing members and the lower wing members in a radially collapsed configuration during surgery; expanding the expandable support member to physically engage a circumferential region of the support member with an annulus of the native cardiac valve to exert sufficient force to pin the native leaflets against the annulus of the cardiac valve; releasing a plurality of constraining wires to allow the upper and the lower wing members to expand radially outward to an expanded configuration, wherein the upper wing members are transverse to the direction of blood flow; and securing the prosthetic valve in the annulus of the native cardiac valve such that the upper wing members expand to physically contact a first section of cardiac tissue spaced away from the native leaflets and surrounding the annulus of the native cardiac valve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification